Synthesis of hydroxypropyl guar gum by phase transfer catalysis

被引：0

作者：

Xiong, RC ^{[1
]}

Chang, MZ ^{[1
]}

Chen, JM ^{[1
]}

Zhou, N ^{[1
]}

Wei, G ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, Beijing 100029, Peoples R China

来源：

CHINESE CHEMICAL LETTERS | 2005年 / 16卷 / 04期

关键词：

guar gum; hydroxypropyl guar gum; chemical modification; phase transfer catalysis;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

HGG (Hydroxypropyl guar gum) was synthesized by phase transfer catalysis for the first time. The effects of alkalinity, phase transfer catalyst, etherification, pH value, temperature, reaction time and stirring speed were investigated. An optimal synthetic reaction technology was established, namely, dose of guar gum is 100 g, propylene oxide 40-50 g, HTAC (hexadecyl trimethyl ammonium chloride) 1.3-1.7 g, pH value 10-10.5, temperature 45-50 degrees C, and reaction time 3-4 hours. The result shows that the improved HGG has high viscosity. Its dissolution speed, content of insoluble residue, colloid light transparency and stability are apparently superior to guar flour.

引用

页码：545 / 546

页数：2